Perhaps you should try some spelling variations:
passiv » passive, massiv, passiver
passivere » passiveere, massivere, passiverere, passiverer, passiver
passiven » passiveen, massiven, passiveren, passive, passion
passivierenden » passiveierenden, massivierenden, passiverierenden, passivierende, passivierender, aktivierenden
massiveren » massivere, massigeren, massivement

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((passiv OR passivere) OR (passiven OR (massiveren OR passivierenden))).
• Adding a wildcard symbol may retrieve word variants: ((passiv or passivere) or (passiven or (massiveren or passivierenden)))*.